1 / 28

Space Weather Tools Demonstration R. Mullinix and M. L. Mays

Space Weather Tools Demonstration R. Mullinix and M. L. Mays NASA GSFC Heliophysics Science Division, Space Weather Laboratory 25 September 2013 http://kauai.ccmc.gsfc.nasa.gov/. Feedback and suggestions are welcome!. and the CCMC/SWRC team. S PACE W EATHER R ESEARCH C ENTER.

tim
Télécharger la présentation

Space Weather Tools Demonstration R. Mullinix and M. L. Mays

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Space Weather Tools Demonstration R. Mullinix and M. L. Mays NASA GSFC Heliophysics Science Division, Space Weather Laboratory 25 September 2013 http://kauai.ccmc.gsfc.nasa.gov/ Feedback and suggestions are welcome! and the CCMC/SWRC team SPACE WEATHER RESEARCH CENTER Email: m.leila.mays@nasa.gov

  2. Outline: • Ensemble modeling • DONKI • Scoreboard • Magnetic Connectivity and Ovation Prime • StereoCAT • One Click (Rick demo)

  3. Ensemble Modeling

  4. Cone Model Concept Zhaoet al, 2002, Cone Model: • CME propagates with nearly constant angular width in a radial direction • CME bulk velocity is radial and the expansion is isotropic Parameters Defined with StereoCAT (CCMC CME Triangulation Tool) CME Parameters: Input To WSA-ENLIL+Cone Model

  5. Ensemble of Input Parameters Ensemble modeling estimates the spread/uncertainty in CME arrival time predictions due to uncertainties in CME input parameters: • Produce a set ofNCME input parameters with the CME triangulation analysis tool. Routine cases have been run with N=48. This number can be increased. • Run an ensemble of N runs of WSA-ENLIL cone model. • This gives an ensemble of N CME arrival times and impact estimates. • For N=48, a average run takes ~130 min on 24 nodes(4 processors/node) on our development system. We estimate that the same run will take ~80 minutes on the production system (16 processors/node).

  6. WSA-ENLIL+Cone model: Automated Ensemble Pipeline The automated ensemble modeling pipeline foundation is complete! • Improvements: • CME input parameters measured with the triangulation tool are automatically fed to the WSA-ENLIL model to digest. • Multiple CME capability added: up to five CMEs in a single simulation. • The total number of N simulations is now variable. • Capability of real-time or historical CME run option introduced. • New detailed results text shows a table of model results (arrival times, Kp estimates, etc) alongside each CME input parameter to allow for easy comparison. • Results are ingested into the integrated Space Weather Analysis system (iSWA) • Next steps: • Graphical improvements to allow comprehension of many (N) results at a glance • Perform more real-time runs to collect more performance statistics

  7. Example: 2012-02-24 CME Histogram of CME Arrival Times for an Ensemble of Input Parameters Predicted arrival time range: Earliest 2012-02-26T09:56 UT Median 2012-02-26T16:56 UT Latest 2012-02-26T23:56 UT Predicted magnetopause standoff distance range: Minimum 5.1 RE Average 5.6 RE Maximum 6.7 RE Predicted Kp range: 90˚ clock angle: 3-5 135˚ clock angle: 4-8 180˚ clock angle: 5-9 Predicted: 100% Hit Hits48 Misses 0 Observed arrival 2012-02-26 20:58 UT Observed Kp=5 This is a prototype graph; we are working on graphical improvements to allow comprehension of many (N) results at a glance

  8. Plots in time of the solar wind density, velocity, magnetic field, and temperature at Earth, as predicted by the WSA-ENLIL+Cone model for the entire ensemble of CME input parameters.

  9. General Ensemble Modeling Statistics A total of 33 ensemble runs,1,332 simulations, were performed • We have performed 23 ensemble runs (962total simulations). • 17of these runs were performed in real time (before observed CME arrival). • 6runs were performed after the CME arrival. • Additionally, a model performance parametric study was carried out: • We performed 10 ensemble runs for one CME(370 total simulations) • The sensitivity of the CME arrival time prediction to free parameters for ambient solar wind model and CME was studied • This study carried out in close collaboration with the ENLIL model developer D. Odstrcil.

  10. Ensemble Modeling Performance • For 6 out of 14 ensemble runs (containing hits) the observed CME arrival was within the range of ensemble arrival time predictions. • The ensemble arrival time predictions are helpful even if the observed arrival is not within the predicted range. This allows us to rule out prediction errors caused by tested CME input parameters. Prediction errors can also come from model limitations. • The average arrival time prediction was computed for each of the twelve ensembles. Using the actual arrival time this gives an average absolute error of8.75hours for alltwelveensembles, which is comparable to current forecasting errors. (RMSE=9.91, average error=-3.87). • We have learned that the initial distribution of CME input parameters is very important for the accuracy of ensemble CME arrival time predictions. • Particularly, the median and spread of the input distribution are important.

  11. Demo: Ensemble Modeling Products Available on iSWA Demo links: 2013-06-21 CME|2013-06-30 CME 2013-07-16 CME|2013-09-19 CME

  12. DONKI Database of Notifications, Knowledge, and Information http://kauai.ccmc.gsfc.nasa.gov/DONKI/ Project Lead: Chiu Wiegand

  13. Before DONKI • Blogs for Daily and Weekly space weather activity • Difficult to Search • Difficult to describe a chain of events • Difficult to disseminate • Static email lists for notifications

  14. DONKIDatabase of Notifications, Knowledge, and Information • Chronicles the daily interpretations of space weather observations, analysis, models, forecasts, and notifications including those provided by the Space Weather Research Center. • Comprehensive knowledge-base search functionality to support anomaly resolution and space science research. • Intelligent linkages, relationships, cause-and-effects between space weather activities  • Automatic dissemination of forecasts and notifications • Enables remote participation by students, world-wide partners, model and forecasting technique developers Demo: http://kauai.ccmc.gsfc.nasa.gov/DONKI

  15. DONKI Future Directions

  16. Demo: DONKI Database of Notifications, Knowledge, and Information http://kauai.ccmc.gsfc.nasa.gov/DONKI/ Example: 2013-05-22 M7.3 flare and related activity, 2012-03-07 X5.4 flare.

  17. Space Weather Scoreboard

  18. Space Weather Scoreboard The CME arrival time scoreboard is a research-based forecasting methods validation activity which provides a central location for the scientific community to: • submit their forecast in real-time • quickly view all forecasts at once in real-time • compare forecasting methods when the event has arrived All prediction methods are welcome and all are encouraged to participate. Currently registered models include: Anemomilos, ESA Model, H3DMHD (HAFv.3 +3DMHD), HAFv.3, STOA, WSA-Enlil + Cone Model, BHV Model, DBM, ECA Model, HelTomo, HI J-map technique, TH Model The scoreboard also includes predictions from the SWRC (Space Weather Research Center). http://swrc.gsfc.nasa.gov/main/cmemodels http://kauai.ccmc.gsfc.nasa.gov/SWScoreBoard

  19. http://kauai.ccmc.gsfc.nasa.gov/SWScoreBoard Anyone can view predictions, please register to submit predictions. Columns are sortable

  20. Demo: Space Weather Scoreboard http://kauai.ccmc.gsfc.nasa.gov/SWScoreBoard

  21. Demo of new iSWA cygnets: Solarscape & Ovation Prime iSWA wiki with Cygnet Descriptions: http://iswa.ccmc.gsfc.nasa.gov/wiki Demo links: http://iswa.gsfc.nasa.gov/IswaSystemWebApp/isep.jsp http://go.nasa.gov/15n0roG

  22. Demo: Magnetic Connectivity Solarscape Viewer Demo link: http://iswa.gsfc.nasa.gov/IswaSystemWebApp/isep.jsp

  23. Ovation Prime • Ovation Prime is an empirical model extracted from many years of aurora data from DMSP2, and is driven by solar wind parameters measured at ACE  • Provides three types (diffuse, discrete and wave aurora) of auroral precipitation patterns and can be displayed in different coordinate systems Demo link Newell, P. T., T. Sotirelis, and S. Wing (2009), Diffuse, monoenergetic, and broadband aurora: The global precipitation budget, J. Geophys. Res., 114, A09207, doi:10.1029/2009JA014326.

  24. StereoCAT Stereo CME Analysis Tool http://ccmc.gsfc.nasa.gov/analysis/stereo/ Demo links: http://go.nasa.gov/1a4WYhN and http://go.nasa.gov/1eFYegi Tutorials and Resources link

  25. Demo: WSA-ENLIL+Cone 1-Click http://kauai.ccmc.gsfc.nasa.gov/EnlilOneClick

  26. Resources and Tutorials • Space Weather Tools page: http://kauai.ccmc.gsfc.nasa.gov/ • Scoreboard: http://kauai.ccmc.gsfc.nasa.gov/SWScoreBoard/ • DONKI: http://kauai.ccmc.gsfc.nasa.gov/DONKI/ • StereoCAT: http://ccmc.gsfc.nasa.gov/analysis/stereo/ • Space Weather tutorials including StereoCAT: • http://ccmc.gsfc.nasa.gov/support/SWREDI/tutorials.php • iSWA wiki with Cygnet Descriptions: http://iswa.ccmc.gsfc.nasa.gov/wiki • Glossary of Space Weather Terms: http://iswa.ccmc.gsfc.nasa.gov/wiki/index.php/Glossary

  27. Questions? Feedback? Suggestions?

More Related